Mr. Excel of http://www.mrexcel.com/ has published a book called "Learn Excel from Mr. Excel". It contains a lot of tricks and tips for smooth and efficient use of Excel.This book costs $39.95. But Mr. Excel has offered to give it free, chapter every week, to anybody who registers by giving their Email id's. I have already received the first chapter which is in the form of PDF. So by the end of an year one can own this Ebook. Register now: http://www.mrexcel.com/learn-excel.html#subscribe By the way all the tips and trips and much more is being given as podcasts in the form of mp4 files which can be downloaded and viewed free. http://feeds.feedburner.com/LearnExcelFromMrexcelPodcast Happy excelling.